The diagonal of square is 12√2 cm . So option C is your answer .
As we know that
- Diagonal of square = √2 ( side of square )
So , we need to find side of square first
Using area of square = Side²
➩ 144 = S²
➩ S = √144
➩ Side = 12 cm
Now ,
➨ Diagonal = √2 ( 12 )
➨ Diagonal of square = 12√2
